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PORemoving or skipping an image from an Image array if it fails to load?
 

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  1. PORemoving or skipping an image from an Image array if it fails to load?
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    <p>I am trying to create a simple animation viewer for a sequence of map images using Javascript. I first load the images into a global array like this</p> <pre><code>while( datetime &lt;= endDatetime) { var fname = getImgFnameFromDate(datetime); var imgAdd = new Image(); imgAdd.src = fname; imgStore.push(imgAdd); datetime.setMinutes(datetime.getMinutes() + 15); } </code></pre> <p>and then loop through them with a short wait between each image.</p> <pre><code>function iter() { ++imgIndex; if (loopFlag) imgIndex = imgIndex % imgStore.length; document.getElementById("map").src=imgStore[imgIndex].src; } </code></pre> <p>Now, the maps are made in near real time and occasionally some will be missing. The file fails to load giving instead a broken link image in the midst of the animation. I would like to simply skip an image that did not load, either by skipping over it or removing it from the array.</p> <p>I have tried using the image width attribute as a proxy for 'isLoaded' i.e. something like</p> <pre><code>function iter() { ++imgIndex; if (loopFlag) imgIndex = imgIndex % imgStore.length; document.getElementById("map").src=imgStore[imgIndex].src; if (imgStore[imgIndex].width == 0) iter(); } </code></pre> <p>However this is unreliable and often leads to an infinite loop as it appears to trigger before the images have had a chance to load.</p> <p>I have tried specifying an onError function for the images, but I can't work out what that function should do. I really want some kind of isLoaded attribute, rather than an event. Maybe I'm going about this the wrong way?</p>
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